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From "Gonyou, Austin" <aus...@coremetrics.com>
Subject RE: mod_file_cache performance
Date Mon, 02 Jul 2001 23:46:06 GMT
Yahoo.......:) !!!

-- 
Austin Gonyou
Systems Architect, CCNA
Coremetrics, Inc.
Phone: 512-796-9023
email: austin@coremetrics.com 

> -----Original Message-----
> From: Cliff Woolley [mailto:cliffwoolley@yahoo.com]
> Sent: Monday, July 02, 2001 6:22 PM
> To: new-httpd@apache.org
> Subject: Re: mod_file_cache performance
> 
> 
> On Mon, 2 Jul 2001, Cliff Woolley wrote:
> 
> > I'll post those (also useless ;-) numbers a little later.
> 
> Okay, I feel a bit better now.  I'm still slapping myself for 
> having run
> all those initial tests over NFS (with unpredictable loads on the NFS
> server during the tests).  Here are the latest numbers, with 
> the old ones
> thrown in just for comparison.  They basically show no difference
> whatsoever between cached and uncached files, within a very 
> small margin
> of error.  Granted, this is on multiple thousands of 
> consecutive requests
> for the same file, which is pretty much the ideal case for 
> the kernel's
> caches... the numbers might diverge a bit more when tested on a box
> serving other files simultaneously in more of a real-world situation.
> 
> So these are pretty much useless, as Dean said, but here they 
> are anyway.
> 
> 
> static file NFS threaded:
> 
>           No keepalives                 Keepalives
>           --------------------------    ----------------------------
> no cache  118.98 req/s  676.92 KB/s     2280.06 req/s  13053.79 KB/s
> CacheFile  90.19 req/s  511.21 KB/s     2181.21 req/s  12440.95 KB/s
> MMapFile   80.90 req/s  458.54 KB/s     1978.32 req/s  11283.72 KB/s
> 
> 
> static file local threaded:
> 
>           No keepalives                 Keepalives
>           --------------------------    ----------------------------
> no cache  154.54 req/s  879.06 KB/s     2432.63 req/s  13924.84 KB/s
> CacheFile 155.53 req/s  881.38 KB/s     2556.91 req/s  14581.54 KB/s
> MMapFile  155.03 req/s  878.55 KB/s     2660.11 req/s  15170.08 KB/s
> 
> 
> 
> server-parsed file NFS threaded:
> 
>           No keepalives                 Keepalives
>           --------------------------    ----------------------------
> no cache   31.81 req/s  183.68 KB/s      453.38 req/s   2647.38 KB/s
> CacheFile  87.20 req/s  501.66 KB/s      682.49 req/s   3965.77 KB/s
> MMapFile  104.17 req/s  599.30 KB/s      674.94 req/s   3925.77 KB/s
> 
> 
> server-parsed file local threaded:
> 
>           No keepalives                 Keepalives
>           --------------------------    ----------------------------
> no cache  143.85 req/s  830.53 KB/s      723.16 req/s   4205.63 KB/s
> CacheFile 144.26 req/s  829.76 KB/s      756.25 req/s   4406.76 KB/s
> MMapFile  144.94 req/s  833.70 KB/s      802.16 req/s   4670.97 KB/s
> 
> 
> --------------------------------------------------------------
>    Cliff Woolley
>    cliffwoolley@yahoo.com
>    Charlottesville, VA
> 
> 

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